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    <h1>购物清单</h1>
        <h2>水果</h2>
            <ul>
                <li>苹果</li>
                <li>草莓</li>
                <li>菠萝</li>
            </ul>
        <h2>运动</h2>
            <ul>
                <li>羽毛球</li>
                <li>足球</li>
                <li>篮球</li>
            </ul>
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